Internal-combustion engine



June 17, 1930. c o GUERNSEY 1,765,230 I INTERNAL COMBUS T ION ENGINE Filed Sept. 22, 1928 2 Sheets-Sheet 1 June 17, 1930. Q O G EY 1,765,230

INTERNAL COMBUS TION ENGINE Filed Sept. 22, 1928 I 2 Sheets-Sheet 2 lg a Patented June 17, mo

' UNITED/STATES PATENT OFFICE W 0. GUERNSEY, PHILADELPHIA, PENNSYLVANIA. INTERNAl-OOHBUSTIQN ENGINE Application filed September 3, 1828. Serial Io. 807,721.

This invention relates to th details of cylinder constructionin an internal combustlon engine, and is more tpartlcularly concerned with the problem 0 uately coolthe cylinder at the juncture tween the I In cy nder v adjacent the head of the piston.

An object of the invention therefore, 1s to rovide adequate cooling means between the uncture of the cylinder head and the cylinder block.

Another object is to provide adequate cool ing means ad acent the top of the piston.

Another object is to provlde adequate cooling means between the juncture of the cyl nder head and the cylinderblock, and ad acent the top of the piston Another object of the mventmn 1s to provide a cylinder sleeve having an offset flange at its upper end.

Another object is to provide a flanged cylinder sleeve, which flange is inter osed between the cylinder head and the cylinder block.

Still another object 1s to provlde a cyllnder sleeve flanged at its upper end, the flange being interposed between the cyhnder head and the cyllnder block; the flange, the cylinder head, and the cylinder block having a cooling system extending therethrough.

Yet another object is to produce a new and im roved cylinder constructlon. Sther ob ects will appear hereinafter. In the drawings:

Fig. 1 is a vertical sectlon of the preferred form of m invention;

Fig. 2 ii a view along the line 2-2 of Fig. 1;

ig. 3 is a transverse section along the 40 line 3-3 of Fig. 1, arid illustrates the bosses rovided for the spar p ugs; p Fig. 4 is a section along the l1ne 4-4 of Fig. 1 and de icts the vertlcal passages, provided in the anged portion 0 the cylinder 4 sleeve for the reception of a cooling medium.

Fig. 5 is a vertical section of another form of m invention and Fig. 6 is a view taken along the hue 6-6 of Fi 5. I fiooking more particularly at Flgs. 1-4, the

ead and the cylinder block, and.

does not have access.

' the piston head.

cylinder block is illustrated at 1, while the cylinder head is broadl indicated by the ref-, erence numeral 2. The c linder sleeve is shown at 3, and is provi ed at its upper end with a flanged portion 4. The cylinder block is mountedpn a suitable frame 5.

Within the cylinder sleeve is carried a piston 6, w h1ch is connected in the usual way to a connectmg rod 7, attached to the customary crank shaft 8. pump or other suitable means 9 supplies a coohn medium to the passageway 10, interposed Eetween the walls of the cylinder block and the cylinder sleeve, thus forming a water jacket.

Ordinarily the cooling medium is passed directly from the water jacket around the cylmder block into a suitable jacket provided around the cylinder head. Inasmuch as the cylinder head and the cylinder block are customarily in juxtaposition and the cylinder sleeve is shouldered into the cylinder block at its top, and since the combustion chamber and spark plugs are placed in the cylinder head, there is found mast considerable area to which the coolingwater As a result of 'this prior construction, local heating of the top of the cylinder sleeve is caused, which in turn tends to increase the temperature of To avoid this intense local the structure shown has been proheatlng, vided.

As will be seen, the cylinder sleeve 3 is provided at its upper end with the flange 4. This flanged portion is interposed between the top of the cylinder block and the lower surface of the cylinder head. Bosses 11 may be provided in the flanged portion for the reception of spark plugs 12. The flange 4 has suitable channels 13 and 14 extending there through, for the passage of thecooling fluid from the channel 10; and these in turn communicate with the passageways 15 in the cylinder head. In this manner, there is formed a complete circuit for a coolin medium, the medium being passed throug pump 9, throu h channels 10, through passageways 13 an 14 into passageways 15, and thence through opening 16 back to the pump. Eihaust and intake 100 ports 17 and 18 are provided in the cylinder ead, the ports being closed by suitable valves 19.

Asv will be noted in Fig. 1, the connecting rod 7, shown at thetop extremity of its stroke, terminates short of the lower face of the cylinder head. Thus a space 20 exists between the top of the piston 6 and the bottom'face of the cylinder head. This space, which is immediately adjacent the spark plugs 12, comprises the combustion chamber.

As a result of this invention, the local hot spot at the top of the iston is avoided, the water-jacketing in the anged portion of the cylinder sleeve lining being adjacent this point, and the amount of water carried around the combustion chamber is considerably increased. The further advantage exists that the cylinder head need not contain the combustion chamber, but can be made flat at the bottom face.

In the form shown in Fig. 5, the cylinder sleeve 21 has a flange 22 at its up er end, which flange is successively outturne downturned, and inturned; the edge of the flange terminating short of the wall of the sleeve. This flange rests on an annular ledge formed on an inner wall of the cylinder block 24, which in turn, is supported by suitable means such as a frame 25.

A piston 26 rides within the cylinder sleeve and is connected by any suitable means such as a pin 27 to the conventional connecting rod 28, which drive the usual crank shaft 29. The flange 22, terminating as it does short of the wall 21, thus provides a small opening 30 which joins an annular water passage 31 to the passageway 32, formed by the flange 22. Any desirable means may be utilized to force the cooling medium through the channels. As shown, these means comprise the pump 33.

Resting on the top of the flange 22 and the circumferential edge of the cylinder block, is the cylinder head 34. A plurality of suitable orifices 35 and 36 connect the passageway 32 with passageways 37 formed in the cylinder head. The usual exhaust and inlet openings 38 and 39 are provided in thecylinder head and these openings are closed by suitable valves 40. A combustion chamber 41, similar to combustion chamber 20, is provided in the top portion of the cylinder sleeve.

In this construction, the fit between the sleeve and the cylinder jacket is on the outer diameter of the water jacket portion of the sleeve, which makes for even freer passage of water between the water jacket and the jacketed portion of the sleeve 21. In this case however, the fitting of spark plugs in this portion is somewhat more diflicult and the precise manner is not shown in the figure.

As will be readily understood, the invention is susceptible to numerous modifications,

1,7ee,2so 1 and it is intended that it be limited only by the scope of the appended claims.

I claim:

1. In an internal combustion engine, a cylinder block, a cylinder head, a cylinder sleeve having at its upper end an outwardly extending flanged portion interposed between said cylinder block and said 0 linder head, bosses in said flanged portion or the reception of s ark (plugs, and cooling means wit in said an e portion.

2. In an internal combustion engine, a c lder block, a cylinder head and acylin er sleeve within said cylinder block, and having at its upper end an outwardly extending water jacketed portion, said portion havin nieans therein for the reception of spar 3. %[n an internal combustion engine, a cylinder block, a cylinder head, a cylinder sleeve in said cylinder block and having an outwardly extending flanged portion at its upper end, a combustion chamber in said sleeve, and spark plugs in said flanged portion.

4. In an internal combustion engine, a cylinder block, a cylinder head, a cylinder sleeve within said cylinder block and terminating 'at its upper end in an outwardly extendin water jacketed portion, a piston within said sleeve, said piston terminating at the extremity of its stroke short of the cylinder head, thus defining a combustion chamber within said cylinder sleeve adjacent said flanged portion, and means within said fiimged portion for the reception of spark p u 5. In an internal combustion engine, a cylinder block, a cylinder head, a cylinder sleeve 'portion for the reception of a spark plug, a

passageway extending through said flanged portion, water j acketing about said cylinder block and about said cylinder head, said passageway connecting said water jacketing and forming a closed water circuit, and means for forcing a cooling medium through said circuit.

6. In an internal combustion engine, a cyl inder block having an internal annular flange adjacent its upper extremity, a cylinder head, a cylinder sleeve within said cylinder block and terminating at its upper end in an outwardly extending hollow flanged portion, said flanged portion resting on said annular flange, water jacketing about said cylinder sleeve and said cylinder head, and a passage- Way connecting said water jacketing to the interior of said hollow flanged portion.

7. In an internal combustion engine, a cylinder block having an internal annular flange adjacent its upper end, a cylinder head provided with water j acketing, a cylinder sleeve within said cylinder block and having at its upper end an outwardly extending hollow annular flange, said flange resting on said internal annular flange, water jacketing about said cylinder sleeve, a piston in said sleeve, said piston terminating at the extremity of its stroke short of said cylinder head, passageways connecting together the water acketing and the interior of the hollow flanged portion, thus forming a closed circuit, and means for forcing a cooling medium through said circuit.

CHARLES o. GUERNSEY. 

